Text preview for : Lexmark T62X 4069 Service Manual.pdf part of Lexmark T62X Lexmark™ T62X 4069-5xx/7xx Service Manual and repair guide



Back to : Lexmark T62X 4069 Service | Home

LexmarkTM T62X

4069-5xx/7xx

· Table of Contents · Start Diagnostics · Safety and Notices · Trademarks · Index · Manuals Menu

Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.

4069-5XX/7XX
Edition: July 2002 The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any time. Comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at [email protected]. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. You can purchase additional copies of publications related to this product by calling 1-800-553-9727. In other countries, contact your point of purchase. ImageQuick, Optra Forms, PictureGrade and StapleSmart are trademarks of Lexmark International, Inc. Lexmark and Lexmark with diamond design, Prebate and MarkNet are trademarks of Lexmark International, Inc., registered in the United States and/or other countries. PostScript is a registered trademark of Adobe Systems Incorporated. PCL is a registered trademark of the Hewlett-Packard Company. Other trademarks are the property of their respective owners. © Copyright Lexmark International, Inc. 2001, 2002. All rights reserved. UNITED STATES GOVERNMENT RESTRICTED RIGHTS This software and documentation are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and in applicable FAR provisions: Lexmark International, Inc., Lexington, KY 40550.

P/N: 12G3959

4069-5XX/7XX

Table of Content
Laser Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools Required for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-3 1-3 1-4

Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Service Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 User Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24 User Attendance Messages. . . . . . . . . . . . . . . . . . . . . . . 2-29 Power-On Self Test (POST) . . . . . . . . . . . . . . . . . . . . . . 2-41 Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42 Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46 Charge Roll Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-47 Cover Open Switch/Cable Service Check . . . . . . . . . . . . 2-49 Dead Machine Service Check . . . . . . . . . . . . . . . . . . . . . 2-50 Duplex Option Service Check . . . . . . . . . . . . . . . . . . . . . 2-53 Envelope Feeder Option Service Check . . . . . . . . . . . . . 2-56 Fan Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63 Cold Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-65 Hot Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-67 Fuser Solenoid Service Check. . . . . . . . . . . . . . . . . . . . . 2-68 Input Sensor Service Check . . . . . . . . . . . . . . . . . . . . . . 2-68 Input Tray(s) Option Service Check . . . . . . . . . . . . . . . . . 2-69 High-Capacity Feeder Input Tray Service Check. . . . . . . 2-72 Main Drive Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-85 Operator Panel Service Check . . . . . . . . . . . . . . . . . . . . 2-86 Options Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-88 Output Bin Sensor Standard Tray Service Check . . . . . . 2-90 Output Expander Service Check . . . . . . . . . . . . . . . . . . . 2-91 High-Capacity Output Stacker Service Check . . . . . . . . . 2-96 5-Bin Mailbox Service Check . . . . . . . . . . . . . . . . . . . . . . 2-99 Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . 2-105 Parallel Port Service Check . . . . . . . . . . . . . . . . . . . . . . 2-107 Printhead Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-108

iii

4069-5XX/7XX Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . .2-109 Smart Cartridge Contact Assembly Service Check. . . . .2-121 Serial Port Service Check . . . . . . . . . . . . . . . . . . . . . . . .2-122 Toner Sensor Service Check . . . . . . . . . . . . . . . . . . . . .2-122 Transfer Roll Service Check . . . . . . . . . . . . . . . . . . . . . .2-123 StapleSmart Finisher Service Check . . . . . . . . . . . . . . .2-125 Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 Diagnostic/Configuration Menu . . . . . . . . . . . . . . . . . . . . . .3-1 Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5 Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 Exiting the Diagnostics Mode . . . . . . . . . . . . . . . . . . . . . . .3-6 Device Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 Quick Disk Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 Disk Test/Clean. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 Flash Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7 Disabling Download Emulations . . . . . . . . . . . . . . . . . . . . .3-8 Duplex Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8 Duplex Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8 Duplex Sensor Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9 Duplex Motor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9 Duplex Feed 1 Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12 Duplex Feed 2 Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12 Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13 Viewing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13 Clearing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13 Hardware Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14 LCD Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14 Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14 SDRAM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15 ROM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15 Parallel Wrap Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16 Serial Wrap Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17 Input Tray Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19 Input Tray Feed Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19 Input Tray Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19 Output Bin - Feed to all Bins Test . . . . . . . . . . . . . . . . . . . . . .3-20 Output Bin Feed Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21 Output Bin Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21 Finisher Tests, StapleSmart Finisher Option . . . . . . . . . . . . . .3-24 Base Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26 StapleSmart Finisher Tests . . . . . . . . . . . . . . . . . . . . . . . .3-26 StapleSmart Finisher Sensor Test . . . . . . . . . . . . . . . . . .3-27

iv Service Manual

4069-5XX/7XX 5-Bin Mailbox Diverter Test . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28 Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28 Printer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 Setting the Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 Viewing the Permanent Page Count . . . . . . . . . . . . . . . . 3-30 Maintenance Page Count . . . . . . . . . . . . . . . . . . . . . . . . 3-31 Setting Configuration ID. . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 Restore EP Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33 Print Quality Test Pages . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 Printing Menu Settings Page . . . . . . . . . . . . . . . . . . . . . . 3-36 Auto Compensator Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3-36 Autoconnect System, Paper Tray Options, Envelope Feeder and Output Expander Operations . . . . . . . . . . . . . . . . . . . . . . . . . 3-37 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37 Fuser Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39 Hot Roll Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39 Paper Feed Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40 Paper Jams - Base Printer. . . . . . . . . . . . . . . . . . . . . . . . 3-40 Paper Jams - Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41 Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Duplex Motor Drive Belts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Fuser Solenoid Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Gap Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Printhead Assembly Adjustment . . . . . . . . . . . . . . . . . . . . 4-4 Paper Alignment Assembly Adjustment. . . . . . . . . . . . . . . 4-5 Screw Identification Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12 Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12 Center Pan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Card Assembly (NAND Flash) . . . . . . . . . . . . . . . . . . . . . 4-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19 Developer Drive Assembly. . . . . . . . . . . . . . . . . . . . . . . . 4-20 Duplex Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21 Duplex Front Cover Assembly . . . . . . . . . . . . . . . . . . . . . 4-21 Duplex Front Cover Door . . . . . . . . . . . . . . . . . . . . . . . . . 4-21 Duplex Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22 EMC Shields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

v

4069-5XX/7XX Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-26 Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-30 Fuser Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31 Fuser Detack Fingers . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31 Fuser Detack Housing Assembly . . . . . . . . . . . . . . . . . . .4-32 Fuser Transfer Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-33 Fuser Envelope Conditioner Solenoid. . . . . . . . . . . . . . . .4-34 Fuser Narrow Media Sensor/Flag Assembly. . . . . . . . . . .4-35 Fuser Exit Sensor Flag Assembly . . . . . . . . . . . . . . . . . . .4-35 Fuser Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-35 Fuser Lower Exit Guide Assembly . . . . . . . . . . . . . . . . . .4-36 High Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . .4-37 Integrated Tray Compensator Assembly. . . . . . . . . . . . . .4-37 Integrated Tray Compensator Pick Roll Assembly . . . . . .4-38 Interconnect Board Assembly . . . . . . . . . . . . . . . . . . . . . .4-40 Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . .4-42 Main Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43 Main Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-45 Multipurpose Tray/Lower Deflector Assembly. . . . . . . . . .4-46 Operator Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . .4-48 Operator Panel Cable/Cover Open Switch Assembly . . . .4-49 Optional 250/500 Paper Tray Assembly . . . . . . . . . . . . . .4-50 Paper Alignment Assembly . . . . . . . . . . . . . . . . . . . . . . . .4-51 Paper Deflectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-53 Paper Input Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-54 Paper Size Sensing Board . . . . . . . . . . . . . . . . . . . . . . . .4-54 Pick Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-54 Printhead (4069-520/52n) . . . . . . . . . . . . . . . . . . . . . . . . .4-55 Printhead (4069-722/72n) . . . . . . . . . . . . . . . . . . . . . . . . .4-56 Redrive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-57 Smart Cartridge Contact Assembly . . . . . . . . . . . . . . . . . .4-58 Toner Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-59 Transfer Roll Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .4-60 Upper Paper Deflector Assembly . . . . . . . . . . . . . . . . . . .4-60 Upper Front Cover Hinge Assembly . . . . . . . . . . . . . . . . .4-61 Upper Front Cover Interlock Switch Assembly . . . . . . . . .4-62 Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1 Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . .5-1 High Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . .5-3 Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4 Envelope Option Board . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7 Duplex Option Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9

vi Service Manual

4069-5XX/7XX Autoconnect - Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Expander Control Board. . . . . . . . . . . . . . . . . . . . High-Capacity Output Stacker Board. . . . . . . . . . . . . . . . System Board Connector Locations . . . . . . . . . . . . . . . . System Board Connector Locations . . . . . . . . . . . . . . . . StapleSmart Finisher Option - Staple Card Assembly . . . Cables - Base Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuser Cable, DC Internal . . . . . . . . . . . . . . . . . . . . . . . . . Autoconnect Cable, (Fuser to LVPS). . . . . . . . . . . . . . . . Deflector Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuser Cable, AC EP Autoconnect to Fuser Top Cover . . Integrated Tray Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . HSYNC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mirror Motor Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main Drive Motor Cable . . . . . . . . . . . . . . . . . . . . . . . . . . Laser Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Harness Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuser Cable, DC EP Autoconnect to System Board . . . . Autoconnect Cable - System Board to Top/Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . Autoconnect Cable - System Board to Front/Bottom/Interconnect Board. . . . . . . . . . . . . . . . . . . 5-11 5-12 5-14 5-16 5-20 5-27 5-31 5-31 5-31 5-31 5-32 5-32 5-32 5-33 5-33 5-33 5-34 5-34 5-34 5-35

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Safety Inspection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Lubrication Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 How to Use this Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Assembly 2: Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 Assembly 3: Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10 Assembly 4: Paper Feed (Auto compensator) . . . . . . . . . 7-12 Assembly 5: Paper Feed - Multipurpose Unit . . . . . . . . . 7-14 Assembly 6: Paper Feed - Alignment . . . . . . . . . . . . . . . 7-16 Assembly 7: Paper Feed - Output . . . . . . . . . . . . . . . . . . 7-18 Assembly 8: Integrated Paper Tray - 500 Sheet . . . . . . . 7-20 Assembly 9: Main Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22 Assembly 10: Developer Drive. . . . . . . . . . . . . . . . . . . . . 7-24 Assembly 11: Hot Roll Fuser . . . . . . . . . . . . . . . . . . . . . . 7-26 Assembly 12: Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30 Assembly 13: Charging . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32 Assembly 14: Electronics . . . . . . . . . . . . . . . . . . . . . . . . 7-34

vii

4069-5XX/7XX Assembly 14: Electronics (continued) . . . . . . . . . . . . . . . .7-36 Assembly 14: Electronics (continued) . . . . . . . . . . . . . . . .7-48 Assembly 15: 250-Sheet Tray . . . . . . . . . . . . . . . . . . . . . .7-50 Assembly 16: 500-Sheet Tray . . . . . . . . . . . . . . . . . . . . . .7-56 Assembly 17: Duplex . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-60 Assembly 18: Output Expander . . . . . . . . . . . . . . . . . . . .7-66 Assembly 19: Envelope Feeder . . . . . . . . . . . . . . . . . . . .7-70 Assembly 20: High-Capacity Feeder. . . . . . . . . . . . . . . . .7-74 Assembly 21: Kiosk - Vertical Paper Adapter . . . . . . . . . .7-88 Assembly 22: Kiosk - Horizontal Paper Adapter . . . . . . . .7-90 Assembly 23: High-Capacity Output Stacker . . . . . . . . . .7-92 Assembly 24: 5-Bin Mailbox . . . . . . . . . . . . . . . . . . . . . . .7-98 Assembly 25: StapleSmart Finisher . . . . . . . . . . . . . . . .7-102 Assembly 26: Options . . . . . . . . . . . . . . . . . . . . . . . . . .7-110 Assembly 27: Miscellaneous . . . . . . . . . . . . . . . . . . . . .7-112 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

viii Service Manual

4069-5XX/7XX

Laser Notices
The following laser notice labels may be affixed to this printer as shown:

Laser Advisory Label

Laser Notices ix

4069-5XX/7XX

Class 1 Laser Statement Label

x Service Manual

4069-5XX/7XX

Laser Notice
The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825. Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b) laser that is nominally a 5 milliwatt gallium arsenide laser operating in the wavelength region of 770-795 nanometers. The laser system and printer are designed so there is never any human access to laser radiation above a Class I level during normal operation, user maintenance, or prescribed service condition.

Laser
Der Drucker erfüllt gemäß amtlicher Bestätigung der USA die Anforderungen der Bestimmung DHHS (Department of Health and Human Services) 21 CFR Teil J für Laserprodukte der Klasse I (1). In anderen Ländern gilt der Drucker als Laserprodukt der Klasse I, der die Anforderungen der IEC (International Electrotechnical Commission) 60825 gemäß amtlicher Bestätigung erfüllt. Laserprodukte der Klasse I gelten als unschädlich. Im Inneren des Druckers befindet sich ein Laser der Klasse IIIb (3b), bei dem es sich um einen Galliumarsenlaser mit 5 Milliwatt handelt, der Wellen der Länge 770-795 Nanometer ausstrahlt. Das Lasersystem und der Drucker sind so konzipiert, daß im Normalbetrieb, bei der Wartung durch den Benutzer oder bei ordnungsgemäßer Wartung durch den Kundendienst Laserbestrahlung, die die Klasse I übersteigen würde, Menschen keinesfalls erreicht.

Laser Notices xi

4069-5XX/7XX

Avis relatif à l'utilisation de laser
Pour les Etats-Unis : cette imprimante est certifiée conforme aux provisions DHHS 21 CFR alinéa J concernant les produits laser de Classe I (1). Pour les autres pays : cette imprimante répond aux normes IEC 60825 relatives aux produits laser de Classe I. Les produits laser de Classe I sont considérés comme des produits non dangereux. Cette imprimante est équipée d'un laser de Classe IIIb (3b) (arséniure de gallium d'une puissance nominale de 5 milliwatts) émettant sur des longueurs d'onde comprises entre 770 et 795 nanomètres. L'imprimante et son système laser sont conçus pour impossible, dans des conditions normales d'utilisation, d'entretien par l'utilisateur ou de révision, l'exposition à des rayonnements laser supérieurs à des rayonnements de Classe I .

Avvertenze sui prodotti laser
Questa stampante è certificata negli Stati Uniti per essere conforme ai requisiti del DHHS 21 CFR Sottocapitolo J per i prodotti laser di classe 1 ed è certificata negli altri Paesi come prodotto laser di classe 1 conforme ai requisiti della norma CEI 60825. I prodotti laser di classe non sono considerati pericolosi. La stampante contiene al suo interno un laser di classe IIIb (3b) all'arseniuro di gallio della potenza di 5mW che opera sulla lunghezza d'onda compresa tra 770 e 795 nanometri. Il sistema laser e la stampante sono stati progettati in modo tale che le persone a contatto con la stampante, durante il normale funzionamento, le operazioni di servizio o quelle di assistenza tecnica, non ricevano radiazioni laser superiori al livello della classe 1.

Laser Notices xii

4069-5XX/7XX

Avisos sobre el láser
Se certifica que, en los EE.UU., esta impresora cumple los requisitos para los productos láser de Clase I (1) establecidos en el subcapítulo J de la norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en los demás países, reúne todas las condiciones expuestas en la norma IEC 60825 para productos láser de Clase I (1). Los productos láser de Clase I no se consideran peligrosos. La impresora contiene en su interior un láser de Clase IIIb (3b) de arseniuro de galio de funcionamiento nominal a 5 milivatios en una longitud de onda de 770 a 795 nanómetros. El sistema láser y la impresora están diseñados de forma que ninguna persona pueda verse afectada por ningún tipo de radiación láser superior al nivel de la Clase I durante su uso normal, el mantenimiento realizado por el usuario o cualquier otra situación de servicio técnico.

Declaração sobre Laser
A impressora está certificada nos E.U.A. em conformidade com os requisitos da regulamentação DHHS 21 CFR Subcapítulo J para a Classe I (1) de produtos laser. Em outros locais, está certificada como um produto laser da Classe I, em conformidade com os requisitos da norma IEC 60825. Os produtos laser da Classe I não são considerados perigosos. Internamente, a impressora contém um produto laser da Classe IIIb (3b), designado laser de arseneto de potássio, de 5 milliwatts ,operando numa faixa de comprimento de onda entre 770 e 795 nanómetros. O sistema e a impressora laser foram concebidos de forma a nunca existir qualquer possiblidade de acesso humano a radiação laser superior a um nível de Classe I durante a operação normal, a manutenção feita pelo utilizador ou condições de assistência prescritas.

Laser Notices xiii

4069-5XX/7XX

Laserinformatie
De printer voldoet aan de eisen die gesteld worden aan een laserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisen vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in IEC 60825. Laserprodukten van klasse I worden niet als ongevaarlijk aangemerkt. De printer is voorzien van een laser van klasse IIIb (3b), dat wil zeggen een gallium arsenide-laser van 5 milliwatt met een golflengte van 770-795 nanometer. Het lasergedeelte en de printer zijn zo ontworpen dat bij normaal gebruik, bij onderhoud of reparatie conform de voorschriften, nooit blootstelling mogelijk is aan laserstraling boven een niveau zoals voorgeschreven is voor klasse 1.

Lasermeddelelse
Printeren er godkendt som et Klasse I-laserprodukt, i overenstemmelse med kravene i IEC 60825. Klasse I-laserprodukter betragtes ikke som farlige. Printeren indeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5 milliwatt galliumarsenid laser, som arbejder på bølgelængdeområdet 770-795 nanometer. Lasersystemet og printeren er udformet således, at mennesker aldrig udsættes for en laserstråling over Klasse I-niveau ved normal drift, brugervedligeholdelse eller obligatoriske servicebetingelser.

Laser Notices xiv

4069-5XX/7XX

Huomautus laserlaitteesta
Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS 21 CFR Subchapter J -määrityksen mukainen ja muualla luokan I laserlaitteiden IEC 60825 -määrityksen mukainen. Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle. Kirjoittimessa on sisäinen luokan IIIb (3b) 5 milliwatin galliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometriä. Laserjärjestelmä ja kirjoitin on suunniteltu siten, että käyttäjä ei altistu luokan I määrityksiä voimakkaammalle säteilylle kirjoittimen normaalin toiminnan, käyttäjän tekemien huoltotoimien tai muiden huoltotoimien yhteydessä.

VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen. VARNING! Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad. Betrakta ej strålen.

Laser-notis
Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21 CFR, underparagraf J för laserprodukter av Klass I (1). I andra länder uppfyller skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 60825. Laserprodukter i Klass I anses ej hälsovådliga. Skrivaren har en inbyggd laser av Klass IIIb (3b) som består av en laserenhet av gallium-arsenid på 5 milliwatt som arbetar i våglängdsområdet 770795 nanometer. Lasersystemet och skrivaren är utformade så att det aldrig finns risk för att någon person utsätts för laserstrålning över Klass I-nivå vid normal användning, underhåll som utförs av användaren eller annan föreskriven serviceåtgärd.

Laser Notices xv

4069-5XX/7XX

Laser-melding
Skriveren er godkjent i USA etter kravene i DHHS 21 CFR, underkapittel J, for klasse I (1) laserprodukter, og er i andre land godkjent som et Klasse I-laserprodukt i samsvar med kravene i IEC 60825. Klasse I-laserprodukter er ikke å betrakte som farlige. Skriveren inneholder internt en klasse IIIb (3b)-laser, som består av en gallium-arsenlaserenhet som avgir stråling i bølgelengdeområdet 770-795 nanometer. Lasersystemet og skriveren er utformet slik at personer aldri utsettes for laserstråling ut over klasse I-nivå under vanlig bruk, vedlikehold som utføres av brukeren, eller foreskrevne serviceoperasjoner.

Avís sobre el Làser
Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe I que compleix els requisits d'IEC 60825. Els productes làser de classe I no es consideren perillosos. Aquesta impressora conté un làser de classe IIIb (3b) d'arseniür de gal.li, nominalment de 5 mil.liwats, i funciona a la regió de longitud d'ona de 770-795 nanòmetres. El sistema làser i la impressora han sigut concebuts de manera que mai hi hagi exposició a la radiació làser per sobre d'un nivell de classe I durant una operació normal, durant les tasques de manteniment d'usuari ni durant els serveis que satisfacin les condicions prescrites.

Laser Notices xvi

4069-5XX/7XX

Japanese Laser Notice

Chinese Laser Notice

Laser Notices xvii

4069-5XX/7XX

Korean Laser Notice

xviii Service Manual

4069-5XX/7XX

Safety Information
· This product is designed, tested and approved to meet strict
global safety standards with the use of specific Lexmark components. The safety features of some parts may not always be obvious. Lexmark is not responsible for the use of other replacement parts. The maintenance information for this product has been prepared for use by a professional service person and is not intended to be used by others. There may be an increased risk of electric shock and personal injury during disassembly and servicing of this product. Professional service personnel should understand this and take necessary precautions.

· ·

Consignes de Sécurité
· Ce produit a été conçu, testé et approuvé pour respecter les
normes strictes de sécurité globale lors de l'utilisation de composants Lexmark spécifiques. Les caractéristiques de sécurité de certains éléments ne sont pas toujours évidentes. Lexmark ne peut être tenu responsable de l'utilisation d'autres pièces de rechange. Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de maintenance qualifié. Le démontage et l'entretien de ce produit pouvant présenter certains risques électriques, le personnel d'entretien qualifié devra prendre toutes les précautions nécessaires.

· ·

Safety Information xix

4069-5XX/7XX

Norme di sicurezza
· Il prodotto è stato progettato, testato e approvato in conformità a
severi standard di sicurezza e per l'utilizzo con componenti Lexmark specifici. Le caratteristiche di sicurezza di alcune parti non sempre sono di immediata comprensione. Lexmark non è responsabile per l'utilizzo di parti di ricambio di altri produttori. Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di assistenza autorizzato. Durante lo smontaggio e la manutenzione di questo prodotto, il rischio di subire scosse elettriche e danni alla persona è più elevato. Il personale di assistenza autorizzato, deve, quindi, adottare le precauzioni necessarie.

· ·

Sicherheitshinweise
· Dieses Produkt und die zugehörigen Komponenten wurden
entworfen und getestet, um beim Einsatz die weltweit gültigen Sicherheitsanforderungen zu erfüllen. Die sicherheitsrelevanten Funktionen der Bauteile und Optionen sind nicht immer offensichtlich. Sofern Teile eingesetzt werden, die nicht von Lexmark sind, wird von Lexmark keinerlei Verantwortung oder Haftung für dieses Produkt übernommen. Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen Wartungsfachmann bestimmt. Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines elektrischen Schlags und körperlicher Verletzung. Das zuständige Fachpersonal sollte entsprechende Vorsichtsmaßnahmen treffen.

· ·

xx Service Manual

4069-5XX/7XX

Pautas de Seguridad
· Este producto se ha diseñado, verificado y aprobado para
cumplir los más estrictos estándares de seguridad global usando los componentes específicos de Lexmark. Puede que las características de seguridad de algunas piezas no sean siempre evidentes. Lexmark no se hace responsable del uso de otras piezas de recambio. La información sobre el mantenimiento de este producto está dirigida exclusivamente al personal cualificado de mantenimiento. Existe mayor riesgo de descarga eléctrica y de daños personales durante el desmontaje y la reparación de la máquina. El personal cualificado debe ser consciente de este peligro y tomar las precauciones necesarias.

· ·

Informações de Segurança
· Este produto foi concebido, testado e aprovado para satisfazer
os padrões globais de segurança na utilização de componentes específicos da Lexmark. As funções de segurança de alguns dos componentes podem não ser sempre óbvias. A Lexmark não é responsável pela utilização de outros componentes de substituição. As informações de segurança relativas a este produto destinam-se a profissionais destes serviços e não devem ser utilizadas por outras pessoas. Risco de choques eléctricos e ferimentos graves durante a desmontagem e manutenção deste produto. Os profissionais destes serviços devem estar avisados deste facto e tomar os cuidados necessários.

· ·

Safety Information xxi

4069-5XX/7XX

Informació de Seguretat
· Aquest producte està dissenyat, comprovat i aprovat per tal
d'acomplir les estrictes normes de seguretat globals amb la utililització de components específics de Lexmark. Les característiques de seguretat d'algunes peces pot ser que no sempre siguin òbvies. Lexmark no es responsabilitza de l'us d'altres peces de recanvi. La informació pel manteniment d'aquest producte està orientada exclusivament a professionals i no està destinada a ningú que no ho sigui. El risc de xoc elèctric i de danys personals pot augmentar durant el procés de desmuntatge i de servei d'aquest producte. El personal professional ha d'estar-ne assabentat i prendre les mesures convenients.

· ·

xxii Service Manual

4069-5XX/7XX

Safety Information xxiii

4069-5XX/7XX

Preface
This book is designed for service personnel. It is divided into the following chapters: 1. General Information contains a general description of the printer and the maintenance approach used to repair it. Special tools and test equipment are listed in this chapter, as well as general environmental and safety instructions. 2. Diagnostic Information contains an error indicator table, symptom tables, and service checks used to isolate failing field replaceable units (FRUs). 3. Diagnostic Aids contains tests and checks used to locate or repeat symptoms of printer problems. 4. Repair Information provides instructions for making printer adjustments and removing and installing FRUs. 5. Connector Locations uses illustrations to identify the connector locations and test points on the printer. 6. Preventive Maintenance contains the lubrication specifications and recommendations to prevent problems. 7. Parts Catalog contains illustrations and part numbers for individual FRUs.

xxiv Service Manual

4069-5XX/7XX

1. General Information
The LexmarkTM T laser printers are letter quality page printers designed to attach to IBM-compatible PC's and to most computer networks. The Lexmark T laser printer is available in the following models.
Model Name Lexmark T620 Lexmark T620n Lexmark T622 Lexmark T622n Type 4069-520 4069-52n (Network) 4069-722 4069-72n (Network)

General Information 1-1

4069-5XX/7XX

Options
The following options are available. Some options are not available in every country. Contact your point of purchase for options available in your country.
Memory options of 4MB, 8MB, 16MB, 32MB, 64MB and 128MB SDRAM Card Assembly Flash memory options of 2MB, 4MB, 8MB and 16MB Card Assembly Integrated network options Token-Ring Ethernet Tri-Port Adapter IR Adapter IPDS Card Assembly and SCS/TNe PRESCRIBE Card Assembly TIFF Card Assembly Bar Code Card Assembly Parallel Interface Card SCS USB/Parallel Port MarkNetTM Print Servers ImageQuick Card Assembly 250 and 500-sheet paper trays of A5, letter, and legal size 250 Sheet Special Media Tray Assembly 500 Sheet Special Media Tray 2000 Sheet High Capacity Feeder Envelope Feeder Duplex Option - 250 Sheet Duplex Option - 500 Sheet Hard Disk - 5.0+ GB Optra FormsTM Hard Disk - 5.0+ GB Vertical Kiosk Presenter Horizontal Kiosk Presenter Output Expander 5-Bin Mailbox High-Capacity Output Stacker StapleSmartTM Finisher Option

1-2 Service Manual

4069-5XX/7XX

Maintenance Approach
The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the service error codes, user status messages, user error messages, service checks, and diagnostic aids to determine the printer problem and repair the failure. After you complete the repair, perform tests as needed to verify the repair.

Tools Required for Service
Flat-blade screwdriver #1 Phillips screwdriver #2 Phillips screwdriver T10 Torx screwdriver 7.0 mm nut driver 5.5 mm wrench Needlenose pliers Diagonal pliers Spring hook Feeler gauges Analog or digital multimeter Parallel wrap plug 1319128 Serial wrap plug 1329048 Twinax/serial debug cable 1381963 Coax/serial debug cable 1381964

General Information 1-3

4069-5XX/7XX

Acronyms
CSU DIMM DRAM EDO EP EPROM ESD FRU GB HVPS LASER LCD LED LVPS MROM NAND NVRAM OEM PC POR POST RIP ROM SDRAM SRAM UPR V ac V dc Customer Setup Dual In-Line Memory Module Dynamic Random Access Memory Enhanced Data Out Electrophotographic Process Erasable, Programmable Read-Only Memory Electrostatic Discharge Field Replaceable Unit Gigabyte High Voltage Power Supply Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode Low Voltage Power Supply Masked Read Only Memory Nonvolatile Random Access Memory Original Equipment Manufacturer Photoconductor Power-On Reset Power-On Self Test Raster Imaging Processor Read Only Memory Synchronous Dual Random Access Memory Static Random Access Memory Used Parts Return Volts alternating current Volts direct current

1-4 Service Manual

4069-5XX/7XX

2. Diagnostic Information
Start
CAUTION: Remove the power cord from the printer or wall outlet before you connect or disconnect any cable or electronic board or assembly for personal safety and to prevent damage to the printer. Use the handholds on the side of the printer. Make sure your fingers are not under the printer when you lift or set the printer down. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in this chapter to determine the corrective action necessary to repair a malfunctioning printer. Service error codes are indicated by a three-digit error code. If a service error code is displayed, go to the "Service Error Codes" on page 2-2. User status messages provide the user with information on the current status of the printer. Ready is displayed on the first line of the display unless Power Saver is invoked, and then Power Saver is displayed. If a user status message is displayed, go to the "User Status Screens" on page 2-24. User error messages are indicated by a two or three-digit error code that provides the user with information that explains a problem with a print cartridge, paper jam, option, port, and so on. If a user error message is displayed, go to the "User Attendance Messages" on page 2-29. If your machine completes the "Power-On Self Test (POST)" on page 2-41 without an error, and you have a symptom, go to the "Symptom Tables" on page 2-42. Locate your symptom and take the appropriate action. If a service error code appears while you are working on the machine, go to the "Service Error Codes" on page 2-2 and take the indicated action for that error.

Diagnostic Information 2-1

4069-5XX/7XX

Service Error Codes
Service Error Codes are generally non-recoverable except in an intermittent condition when you can POR the printer to temporarily recover from the error condition.
Error Code 900 RIP Software 901 Engine Flash 902 General Engine Software 903 Paperport Link Driver Error 904 Interface Violation by the controller software 905 Interface Violation by Paperport Device 906 ControllerEngine Link Driver Error 910 DC Pick Motor DC Pick Motor Stall 911 DC Pick Motor Excessive PWM 912 DC Pick Motor below speed 913 DC Pick Motor over speed Error Codes 910,911,912,913 and 914 are indications that a Tray 1 paper feed problem has been detected. Go to the "Input Tray(s) Option Service Check" on page 2-69. Action Contact the next support level or call Lexmark. Indicates that the flash which the engine code is programmed into is bad. Replace the system board. These errors indicate an unrecoverable engine software error. Replace the system board. Check for correct location of the jumpers on the interconnect board for the model/type printer you are servicing. Incorrect jumper settings can cause a 902 service error. If jumpers are set correctly, replace the system board.

2-2 Service Manual

4069-5XX/7XX
Error Code 914 DC Pick Motor: No encoder feedback 917 Transfer Roll 920 Fuser Error Action Check the integrated paper tray (tray 1) for correct paper loading. Reload the paper and POR the printer. If the error continues, go to the "Input Tray(s) Option Service Check" on page 2-69. Indicates a problem in the transfer roll area. Go to the "Transfer Roll Service Check" on page 2-123. Indicates that the fuser is below temperature when printing. Go to the "Cold Fuser Service Check" on page 2-65. Use of the "Base Printer (Fuser) Sub Error Codes" on page 2-17 may help diagnose fuser failure. Indicates that the fuser is below standby temperature when the printer is idle. Go to the "Cold Fuser Service Check" on page 2-65. Use of the "Base Printer (Fuser) Sub Error Codes" on page 2-17 may help diagnose fuser failure. Fuser failed to reach standby temperature. Go to the "Cold Fuser Service Check" on page 2-65. Use of the "Base Printer (Fuser) Sub Error Codes" on page 2-17 may help diagnose fuser failure. Fuser is too hot during printing or when printer is idle. Go to the "Hot Fuser Service Check" on page 2-67. Use of the "Base Printer (Fuser) Sub Error Codes" on page 2-17 may help diagnose fuser failure. An open circuit has been detected in the Fuser Thermistor Circuit. Go to the "Hot Fuser Service Check" on page 2-67. Use of the "Base Printer (Fuser) Sub Error Codes" on page 2-17 may help diagnose fuser failure. 1. Indicates the wrong fuser lamp is installed. Check the fuser lamp for the correct type of lamp that should be installed. 2. Check the line voltage to ensure it is not above the maximum rating for the printer. 3. This error may also indicate the fuser reached standby temperature too quickly. 4. The hot roll may not be correct for this fuser. Ensure that the correct hot roll is installed. Indicates a printer fan stalled. Go to the "Fan Service Check" on page 2-63.

921 Fuser Error

922 Fuser Error

923 Fuser Error

924 Fuser Error

925 Fuser Error

927 Fan Stalled

Diagnostic Information 2-3

4069-5XX/7XX
Error Code 929 Toner Sensor Action The toner sensor is not operating properly, the developer drive assembly is not operating properly or the print cartridge is defective. Go to the "Toner Sensor Service Check" on page 2-122. The wrong printhead is installed. Replace with the correct printhead. These errors represent a problem with the printhead. Go to the "Printhead Service Check" on page 2-108.

930 Printhead Error 932-935 Printhead Error 932 Printhead Error 933 Printhead Error 934 Printhead Error 935 Printhead Error 936-937 Transport Motor 936 - Main Drive Motor initial lock failure 937 - Main Drive Motor lost lock 939 RIP-Engine Communications Lost

Indicates a problem with the main drive motor. Go to the "Main Drive Service Check" on page 2-85.

The RIP and engine cannot communicate with one another. The system board or Interconnect board is defective. Check for correct installation. If no problem is found, replace the FRUs in the following order: System Board Interconnect Board Note: If a problem still exists, the RIP software can cause a 939 error code. Contact your next level for software support.

2-4 Service Manual

4069-5XX/7XX
Error Code 940 Service LV Power Supply Action The low voltage power supply zero crossover test failed. · Check the LVPS for correct installation. Ensure that the connector on the LVPS assembly is firmly seated with the connector on the interconnect card connector. · This error can be caused by a noisy AC input power source. · Check to make sure the correct LVPS has been installed. · If all the above are correct, replace the LVPS assembly. 947 PQET Error Indicates that the PQET RAM test was incomplete or a PQET RAM test busy failure occurred. Replace the system board. Indicates the PEL clock check failed. Replace the system board. Indicates a delay line calibration failure. Replace the system board. System board failures. 953 NVRAM Chip Failure 954 NVRAM CRC Failure Replace system board. 955 Code CRC Code ROM and NAND failed CRC check * = For a ROM CRC failure, the location (loc) will be a failing block or (Bn). * = For a NAND CRC failure, the location (loc) will be a failing page or (Pn). Replace System Board.

948 PEL Clock Error 949 Delay Line Calibration Failure 953 - 954 NVRAM Failure

Diagnostic Information 2-5

4069-5XX/7XX
Error Code 956, 957, 959 System Board Action Error codes 956 thru 959 are system board failures. Perform a power on reset (POR). If this does not fix the problem, replace the system board. *956 = Processor Failure *957 = ASIC Failure *959 = SRAM Failure 958 NAND Failure Before proceeding when a 958 NAND failure is displayed, perform a Power On Reset (power the printer Off then On) to see if the ECC (Error Correction Code) can reflash NAND. If this does not fix the problem, replace the system board. 960 - 963 RAM Memory Error Error codes 960 thru 963 indicate the following specific RAM error: *960 - RAM soldered on the system board is failing. Replace the system board. *961 - RAM in slot 1 is failing. *962 - RAM in slot 2 is failing *963 - RAM in slot 3 is failing. For errors 961 thru 963, if available, switch memory from the failing slot with one from a non-failing slot to see if it fixes the problem. If it does fix the problem, replace the system board. If this fixes the problem, replace the defective RAM. 964 Emulation Error Download Emulation CRC failure has occurred.

2-6 Service Manual

4069-5XX/7XX
Error Code 975 - 979 Network Card X Action The following errors indicate a failure with the network card in the specified slot. X=any card installed in slots 1,2 or 3. 975 - Unrecognizable Network Card x. Replace Network Card x. 976 - Unrecoverable software error in Network Card x. 977 - Controller software detects that a Network Card is installed in slot x but cannot establish communications with it. 978 - Bad checksum while programming Network Card x. Replace Network Card x. 979 - Flash parts failed while programming Network Card x. If the printer is a network model, replace the system board. These error codes indicate the specified device has detected a paper port failure. Specified device can be one of the following: *System Board *Duplex *Tray x (x = 1,2,3,4 or 5) *Envelope Feeder *Output Bin x (x = 1,2,3 to 6) **Will be displayed for single bin output options. *Output Bins x to y (x to y = 1 to 5, 2 to 6, 6 to 10) **Will be displayed for multiple bin output options. 980 = The engine is experiencing unreliable communications to the specified device. 981 = Engine protocol violation has been detected by the specified device. 982 = Communications error detected by the specified device. 983 = Invalid command received by the specified device. 984 = Invalid command parameter received by the specified device.

980 - 984 Service Comm.

Diagnostic Information 2-7

4069-5XX/7XX
Error Code 990 Service Action This error will be displayed when an equipment check condition has occurred in the specified device (), but the device is unable to identify the exact component failure. Specified device can be one of the following: *System Board * Duplex *Tray x (x = 1,2,3,4 or 5) *Envelope Feeder *Output Bin x (x = 1,2,3 to 6) **Will be displayed for single bin output options. *Output Bins x to y (x to y = 1 to 5, 2 to 6, 6 to 10) **Will be displayed for multiple bin output options. *StapleSmart Finisher Option 991 Service Card This message will be displayed when the specified device has detected an equipment check in its system card. Specified device can be one of the following: * Duplex *Tray x (x = 1,2,3,4 or 5) *Envelope Feeder *Output Bin x (x = 1,2,3 to 6) **Will be displayed for single bin output options. *Output Bins x to y (x to y = 1 to 5, 2 to 6, 6 to 10) **Will be displayed for multiple bin output options. *StapleSmart Finisher Option

Sub Error Codes for 9XX and 2XX Error Codes The sub error codes are helpful troubleshooting a paper path problem, especially paper jams in the base printer, envelope feeder and duplex unit. When a 9XX or 2XX error displays: 1. Press and hold Return and press Select to enter for sub error codes. 2. The first screen of information is displayed. Write down the information.

2-8 Service Manual

4069-5XX/7XX 3. Continue pressing Return and Select until each screen of information is obtained. 4. When the last screen displays, the original message displays. The following is an example of how the printer shows a duplex unit sub error code.
Byte 1 DU DU XX XX Byte 5 Byte 2 XX XX Byte 6 Byte 3 XX XX Byte 7 Byte 4 XX XX Byte 8

Diagnostic Information 2-9

4069-5XX/7XX Base Printer Sub Error Codes Each status byte has a different level of troubleshooting value for each area of the printer. The following table displays up to 8 status bytes of data. Some or all of these bytes may be used to help diagnose a printer problem. These status bytes are designed to help isolate paper jams and paper feed problems in the base printer Legend for Tray Source: x=10 (MPT), x-11 (Tray 1), x=12, (Tray 2), x=13 (Tray 3), x-14 (Tray 4), x=15 (Tray 5), x=31 (Env Feeder), X=40 (Manual) Legend for Stacker Destination: x=91 (Stacker 1), x=92 (Stacker 2), x-93 (Stacker 3) Legend for media size: x=1 (letter), x=2 (legal), x=3 (B5), x=4 (A4), x=5 (Executive), x=6 (A5), x=7 (Custom), x=9 (73/4 Env), A-#9 Env, B-#10 Env, C=8.661" Env, D=C5 Env, E=B5 Env, F=Legal Env.
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 84 xx 00 x1 x2

Explanation

This code indicates that the input sensor in the printer is still actuated from the first sheet and the second sheet is ready to arrive at the sensor. (x1=media size, x2=media source) *Check the printer input sensor and flag for correct operation. The flag should operate freely. *Check for any signs of debris in the area of the input sensor. *Check the area of the transfer plate and input to the fuser for anything that might cause the paper to remain over the input sensor. Video never started on the page. (x-1=media size) *The video signal never started within 2 inches after actuating the input sensor. Check input sensor and flag.

84 xx 01 x1

2-10 Service Manual

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 84 xx 02 x1

Explanation

This error is the most common type of paper jam. Possible causes are (x1=media size): *Multi sheet feeding. *A tray size sensing problem. *The media feeding from the paper source is slipping or media is slipping in input to the printer. The input sensor was covered during POST by a piece of media still in the machine when it was turned on. *Clear the media from the printer. *Run the base sensor test (input sensor) from the diagnostic tests menu to test the input sensor and flag for correct operation. There was a media at the input sensor too early. There was not enough time between printhead start and the printhead mirror motor to lock. Possible causes for this error are: *Paper might be pre-staged in the paper source tray. *Paper is picking too fast. *A defective input sensor. A paper jam has been declared by a smart device. Immediate stop homing not allowed. A paper jam has been declared by a smart device. Homing was allowed before the stop. The option tray pass thru sensor was never actuated by a piece of media. (x-1=media size) (x-2=media source) (x3=paper source where paper jam was detected) *Run the sensor test for the option tray that is displaying the error code and check the pass thru sensor for that tray for correct operation. *Check for paper picking from the selected paper input source. *If the error is being detected from a lower paper source, see if paper is feeding correctly from a paper source above the detected source.

84 xx 04

84 xx 05

84 00 06 84 00 07 84 xx 0B x1 x2 x3

Diagnostic Information 2-11

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 84 xx 0f x1 x2 x3

Explanation

The option Tray pass thru sensor was never deactivated. (x-1=media size) (x-2=media source) (x-3=media source where paper jam was detected) *Check the pass thru sensor and flag for correct operation. *Check to see if paper has cleared the pass thru area of the option where the paper jam occurred. The main motor ID failed to identify either motor after two tries. Possible causes for this error are: *The main drive motor has stalled. *An incorrect main drive motor/gearbox assembly has been installed. There is an envelope or envelopes in the envelope feeder during warm-up. An envelope may have partially fed from the envelope feeder. *Remove any envelopes from the feeder and check the envelope feeder for correct operation. There is media over the Tray 2 pass thru sensor during warmup. Check for media over the sensor. If no media is present, check the pass thru sensor, flag, and cables. *Try running the Input Tray Tests for Tray 2 and see if Tray 2 is feeding paper correctly and all the sensors are working correctly. *Check to make sure the paper size setting is correct for the size paper in the tray. There is media over the Tray 3 pass thru sensor during warmup. Check for media over the sensor. If no media is present, check the pass thru sensor, flag, and cables. *Try running the Input Tray Tests for Tray 3 and see if Tray 3 is feeding paper correctly and all the sensors are working correctly. *Check to make sure the paper size setting is correct for the size paper in the tray.

84 00 10

84 xx 17

84 xx 18

84 xx 19

2-12 Service Manual

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 84 xx 1A

Explanation

There is media over the Tray 4 pass thru sensor during warmup. Check for media over the sensor. If no media is present, check the pass thru sensor, flag, and cables. *Try running the Input Tray Tests for Tray 4 and see if Tray 4 is feeding paper correctly and all the sensors are working correctly. *Check to make sure the paper size setting is correct for the size paper in the tray. There is media over the Tray 5 pass thru sensor during warmup. Check for media over the sensor. If no media is present, check the pass thru sensor, flag, and cables. *Try running the Input Tray Tests for Tray 5 and see if Tray 5 is feeding paper correctly and all the sensors are working correctly. *Check to make sure the paper size setting is correct for the size paper in the tray. There is media over the Tray 6 pass thru sensor during warmup. Check for media over the sensor. If no media is present, check the pass thru sensor, flag, and cables. *Try running the Input Tray Tests for Tray 6 and see if Tray 6 is feeding paper correctly and all the sensors are working correctly. *Check to make sure the paper size setting is correct for the size paper in the tray. The envelope feeder pass thru sensor never deactivated. The display of this code indicates that an envelope never crossed over the sensor flag and passed beyond the sensor, or the flag and sensor are not operating properly. Go to the "Envelope Feeder Option Service Check" on page 2-56. The envelope feeder pass thru sensor was never activated. (x1=Media Size, x2=Media Source) Ensure that envelopes are feeding over the sensor. If an envelope feeds over the sensor but the sensor does not activate, check the sensor and flag for correct operation. If the sensor and flag are operating correctly, go to the "Envelope Feeder Option Service Check" on page 2-56.

84 xx 1B

84 xx 1C

84 xx 1D

84 xx 1E x1 x2

Diagnostic Information 2-13

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 84 xx 20 x1 x2

Explanation

The imaged page is not the expected page. (x1=Media Size, x2=Media Source) Check the pass thru sensor to make sure it is operating properly. If no problem is found, it may be necessary to try a new pass thru sensor.

84 xx 21 x1 x2

The smart tray x did not pick a sheet of paper. (x1=Media Size, x2=Media Source) Check tray x auto compensator and tray parts for correct operation. If no problem is found, go to the "Input Tray(s) Option Service Check" on page 2-69.

84 xx 22 x1 x2

This code indicates that the media activated the input sensor before the printer EP was ready. (x1=Leading Edge of Media State, x2=Trailing Edge of Media State) The transfer servo never started. (x1=Media Size, x2=Leading Edge of Media State) This code indicates that the media has activated the input sensor before the printhead has locked. Enough time has elapsed since printhead start to expect a lock. One of the following may be failing: *Printhead Assembly *System Board *Printhead Cables This code indicates that media has activated the input sensor; however, the printhead fell out of lock condition or not enough time elapsed since the printhead start to expect a stable lock. The media may have also reached the input sensor early.

84 xx 23 x1 x2 84 xx 25

84 xx 26

2-14 Service Manual

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 89 00 01

Explanation

The exit sensor in the fuser is activated by a piece of media indicating there is a piece of media in the machine during POST. *Check for media in the exit of the fuser assembly or redrive assembly. Feed a sheet of paper, and if the same error occurs after clearing the fuser or the same error occurs when no media is present, check the exit sensor assembly, internal fuser assembly cabling, DC fuser cable to the system board, and the cable connection to J14 on the system board. TIP: Turn the printer off, enter the diagnostic tests menu, and select the base sensor test. Select output sensor and check the sensor for correct operation.

89 xx 03

The fuser exit sensor did not detect the trailing edge of the media going through the fuser assembly. *This failure can be caused by a broken fuser exit sensor flag. *This may also be caused by erratic operation of exit sensor flag or exit sensor or a defective piece of media. The fuser exit sensor never actuated from the sheet going through the fuser before the next page begins feeding. (x-1=Media Size) The narrow media sensor in the fuser was covered by a sheet of paper when not expected or a piece of media is in the machine during POST. *This error can occur when a 202 paper jam has occurred. *Remove any piece of media that is over the narrow media sensor. *Try to feed a piece of paper through the printer (could run the print test from the diagnostic test menu). If the media stops over the narrow media sensor again, check the flag and sensor for correct operation. The fuser exit sensor may be bouncing. *This error can be caused by a failing exit sensor or system board.

89 xx 04 x1

89 xx 07

89 xx 0B x1

Diagnostic Information 2-15

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 89 xx 0D

Explanation

The fuser exit sensor bounced. Check the exit sensor for correct operation. Check the fuser DC cable to J14 on the system board. Also, the system board may be failing. The fuser exit sensor was never activated by the leading edge of the media fed through the printer. *This error can be displayed after a 201 paper jam. *This can be caused by a defective fuser exit sensor assembly. Enter the diagnostic tests menu, select base sensor tests, select output sensor test and check the fuser exit sensor for correct operation. If the test fails, check the internal fuser cabling, DC autoconnect on the fuser frame, fuser DC autoconnect to the system board cable, and the cable connection to J14 on the system board.

8D 00 00

8E xx 02 x1 x2

This error can be caused by the input sensor not being activated by a page that was known to have been picked by a source other than the duplex option. *Ensure the correct source has been selected and the media is feeding from that source. The second pick failed from a paper source when paper was in the source and the only sheet in the paper path. The second pick failed from a paper source when paper was in the source. Other sheets may have started to feed, but none were in the paper path. The paper in the output bin was flushed. The paper ahead of it, in the paper path, never made it past the output bin sensor or into the tray. The second pick from the MPT, Tray 1 or feeder failed when paper was in the source. Other sheets may be in the paper path. (x1=Media Source) The second pick from the MPT, Tray 1 or feeder failed when paper was in the source. Other sheets may have started to pick, but none were in the paper path. x1=Media Source)

8E xx 06 x1 8E xx 07 x1

8E xx 08

8E xx 09 x1

8E xx 0A x1

2-16 Service Manual

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value. 8E x1 0B 8E xx 11 8E xx 13 x1 x2

Explanation

The DC auto compensator failed or stalled when trying to feed a sheet of media. It took too long for the DC auto compensator motor to come up to speed. Late feeding from a paper source interfered with the next pick retry. (x-1=Media Size)(x-2=Media Source)

Base Printer (Fuser) Sub Error Codes The following Sub Error Codes could be a help in diagnosing Fuser Assembly failures:
First 6 Bytes Sub Error Code Data - Note: xx can be any value

Explanation

920 Service - Fuser Error (Under temperature while printing) EN 08 xx yy -1 EN- zz - - 2 xx=Actual Fuser Temperature yy=The temperature that the fuser wants to reach. When zz=00 The Hot Roll took too long to heat up. zz=01 The Hot Roll fell too far below the desired temperature while printing. zz=02 The Hot Roll was too cool while the system was doing some checking. zz=03 The Hot Roll was too cool when heating to the desired temperature.

921 Service - Fuser Error (Fuser under temperature while at standby)

Diagnostic Information 2-17

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any value EN 41 xx yy -- 1 EN -- zz -- -2

Explanation

xx=Actual Fuser Temperature yy=The temperature that the fuser wants to reach. zz=00 The fuser temperature did not change enough from the fuser lamp temperature at turn on. 01 The fuser temperature rose more than desired from the fuser temperature at turn on.

922 Service - Fuser Error (Fuser failed to reach standby temperature) EN 42 xx yy -- 1 EN z1 z2 -- -2 xx=Actual Fuser Temperature yy=The temperature that the fuser wants to reach. zz=00 The fuser temperature did not change enough from the fuser lamp temperature at turn on. 01 The fuser temperature rose more than desired from the fuser temperature at turn on. z2=00 The Hot Roll did not reach standby temperature in time during standby. 01 The Hot Roll took too long to reach the beginning lamp detection temperature. 02 The Hot Roll reached `final lamp detection temperature' but took longer than expected. 03 The Hot Roll timed out trying to reach the `final lamp detection temperature.' 04 After Hot Roll lamp detection, did not reach steady state control in time. 05 The Hot Roll did not reach operating temperature in time. 923 Service - Fuser Error (Fuser over temperature) EN 12 xx yy -- 1 EN -- -- -- -2 This sub error code is displayed anytime that the Hot Roll has reached a higher than desired temperature. xx=Actual Fuser Temperature yy=The temperature that the fuser wants to reach.

924 Service - Fuser Error (Open Thermistor Failure) EN 18 xx -- -1 EN -- 00 -- -2 This code is usually generated when an open circuit check is made of the thermistor circuit in the fuser. xx=Actual Fuser Temperature

2-18 Service Manual

4069-5XX/7XX
First 6 Bytes Sub Error Code Data - Note: xx can be any val